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<?php function byRef(& $param){ } readonly class A { public int $prop; } $a = new A; byRef($a->prop);
Output for git.master_jit, git.master
Fatal error: Uncaught Error: Cannot indirectly modify readonly property A::$prop in /in/22u5X:11 Stack trace: #0 {main} thrown in /in/22u5X on line 11
Process exited with code 255.

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